Table of Contents
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INSTALLATION INSTRUCTIONS
RHPL Premium High Efficiency
Equipped With The Comfort Control
WARNING
LWARNING
These instructions are intended as an aid to qualified licensed
service personnel for proper installation, adjustment and
operation of this unit. Read these instructions thoroughly before
attempting installation or operation. Failure to follow these
instructions may result in improper installation, adjustment,
service or maintenance possibly resulting in fire, electrical
shock, property damage, personal injury or death.
AIR HANDLERS
2
System™
ISO 9001:2008
92-20521-45-05
SUPERSEDES 92-20521-45-04
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Table of Contents
Related Manuals for Rheem RHPL-HM2421JC
Summary of Contents for Rheem RHPL-HM2421JC
- Page 1 INSTALLATION INSTRUCTIONS AIR HANDLERS RHPL Premium High Efficiency Equipped With The Comfort Control System™ WARNING LWARNING These instructions are intended as an aid to qualified licensed service personnel for proper installation, adjustment and operation of this unit. Read these instructions thoroughly before attempting installation or operation.
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Page 2: Table Of Contents
CONTENTS SAFETY INFORMATION........3 GENERAL INFORMATION . -
Page 3: Safety Information
1.0 SAFETY INFORMATION WARNING Duct leaks can create an unbalanced system and draw pollutants such as dirt, dust, fumes and odors into the home causing property damage. Fumes and odors from toxic, volatile or flammable chemicals, as well as automobile exhaust and carbon monoxide (CO), can be drawn into the living space through leaking ducts and unbalanced duct systems causing personal injury or death (see Figure 1). - Page 4 WARNING (SEE SECTION 4.3: GROUNDING) The unit must be permanently grounded. Failure to do so can result in electri- cal shock causing personal injury or death. WARNING (SEE SECTION 13.0: MAINTENANCE) Units with circuit breaker(s) meet requirements as a service disconnect switch, however, if access is required to the line side (covered) of the circuit breaker, this side of the breaker(s) will be energized with the breaker(s) de- energized.
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Page 5: General Information
WARNING (SEE SECTION 3.3: VERTICAL DOWNFLOW & HORIZONTAL RIGHT) The RXHB-17, RXHB-21, or RXHB-24 combustible floor base is required when certain units are applied downflow on combustible flooring. Failure to use the base can cause a fire resulting in property damage, personal injury or death. See clearances for units requiring a combustible floor base. - Page 6 FIGURE 1 MIGRATION OF DANGEROUS SUBSTANCES, FUMES, AND ODORS INTO LIVING SPACES Proper balance and sealing of the duct system improves the efficiency of the heating and air conditioning system and improves the indoor air quality of the home by reducing the amount of airborne pollutants that enter homes from spaces where the ductwork and/or equipment is located.
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Page 7: Receiving
L = R-410A REFRIGERANT CAPACITY HM = A/C OR HEAT PUMP 24 = 18000/24000 BTUH 48 = 42000/48000 BTUH MULTI-POSITION (Upflow & 36 = 30000/36000 BTUH 60 = 60000 BTUH Horizontal Left Is The Factory Configuration) AVAILABLE MODELS RHPL-HM2421JC RHPL-HM3621JC RHPL-HM4824JC RHPL-HM6024JC... -
Page 8: Dimensions And Weights
2.4 DIMENSIONS & WEIGHTS (SEE FIGURE 3) FIGURE 3 DIMENSIONS AND WEIGHTS -- SINGLE COIL UNITS NOTE: 24" CLEARANCE REQUIRED IN FRONT OF UNIT FOR FILTER AND COIL MAINTENANCE. ELECTRICAL CONNECTIONS SUPPLY AIR MAY EXIT TOP OR EITHER SIDE HIGH VOLTAGE CONNECTION 7/8". 1 3/32", 1 31/32"... -
Page 9: Clearances
2.5 CLEARANCES • All units are designed for “0” inches clearance to combustible material on all cabinet surfaces. • Units with electric heat require a one inch clearance to combustible material for the first three feet of supply plenum and ductwork. •... -
Page 10: Applications
3.0 APPLICATIONS 3.1 ZONING SYSTEMS The manufacturer does not currently provide or support zoning. However, zoning systems can be installed with a variable speed air-handler as long as the zoning equipment manu- facturers specifications and installation instructions are met and followed. The preferred zoning method is to use a “bypass”... - Page 11 FIGURE 6 ROTATING CIRCUIT BREAKER • Remove the indoor coil. • Rotate the circuit breaker(s) (if in the horizontal right position) 180° (see instructions for rotating breaker(s) that follow). IMPORTANT: To comply with certification agencies and the National Electric Code, units with circuit breaker(s) on vertical units must have circuit breakers installed so that the breaker switch “on”...
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Page 12: Installation In An Unconditioned Space
• Rotate unit into the downflow position, with the coil compartment on top and the blower com- partment on bottom. • A second set of coil rails must be field installed for vertical down-flow and horizontal right applications. Fastener clearance holes will need to be drilled in the cabinet sides (proper hole locations are marked with “dimples”... -
Page 13: Electrical Wiring
4.0 ELECTRICAL WIRING WARNING Disconnect all power to unit before installing or servicing. More than one dis- connect switch may be required to de-energize the equipment. Hazardous volt- age can cause severe personal injury or death. Field wiring must comply with the National Electric Code (C.E.C. in Canada) and any applicable local ordinance. -
Page 14: Electric Heat Electrical Data
4.5 ELECTRIC HEAT ELECTRICAL DATA Installation of the UL Listed original equipment manufacturer provided heater kits listed in the table below is recommended for all auxiliary heating requirements. Maximum Minimum Manufacturer Type Supply Heater Heater Motor RHPL-HM Voltage PH/HZ Circuit Circuit Model Number Circuit... -
Page 15: Board
5.0 AIR HANDLER omfort ontrol System™ INTERFACE BOARD FIGURE 8 THE AIR HANDLER CONTROL BOARD EQUIPPED WITH THE Comfort Control System™ The RHPL-series of air handlers are designed to operate with conventional 24VAC con- trols or with a serial communicating system. For the Comfort Control System™, you must have: •... -
Page 16: Control Board
• Do not leave excess field control wiring inside unit, pull excess control wire to outside of unit and provide strain relief for field wiring on inside of cabinet at point wiring pene- trates cabinet. • Make sure, after installation, separation of control wiring and power wiring has been maintained. -
Page 17: Cooling Airflow Settings (By Tonnage)
serial communicating control have NO affect on the airflow. IMPORTANT: When using serial communications, the DIP switches have no affect or airflo or on air handler performance. IMPORTANT: When using the Comfort Control , the DIP switches have no affect on airflow or on air handler performance. -
Page 18: Electric Heat Airflow
ELECTRIC HEAT AIRFLOW FOR THE RHPL- AIR HANDLERS ODD TERMINAL Air Handler Above 15KW and Model 15KW: below: INDOOR INPUT TO “ODD” AMBIENT TERMINAL RHPL-HM2421JC 800 CFM 600 CFM CONDITION (FROM HUMIDISTAT) RHPL-HM3621JC 1200 CFM 600 CFM HIGH HUMIDITY Ø VAC RHPL-HM4824JC 1600 CFM... - Page 19 WIRE COLOR CODE BK – BLACK G – GREEN PR – PURPLE Y – YELLOW BR – BROWN GY – GRAY R – RED BL – BLUE O – ORANGE W – WHITE FIGURE 10 FIGURE 11 TYPICAL 2-STAGE THERMOSTAT: (-)PRL HEAT PUMP WITH TYPICAL TWO-STAGE THERMOSTAT: (-)PRL HEAT PUMP WITH ELECTRIC HEAT ELECTRIC HEAT USING A HUMIDISTAT FOR DEHUMIDIFICATION*.
- Page 20 WIRE COLOR CODE BK – BLACK G – GREEN PR – PURPLE Y – YELLOW BR – BROWN GY – GRAY R – RED BL – BLUE O – ORANGE W – WHITE FIGURE 14 FIGURE 15 TYPICAL SINGLE-STAGE THERMOSTAT: SINGLE STAGE STRAIGHT TYPICAL SINGLE-STAGE THERMOSTAT: SINGLE STAGE STRAIGHT COOLING WITH ELECTRIC HEAT COOLING WITH ELECTRIC HEAT AND USING A HUMIDISTAT FOR...
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Page 21: Conventional 24Vac Thermostat Control Wiring
Profile D – Dry Climate profile The Dry Climate profile is configured for areas that require little to no additional dehu- midification. On Delay Delay Duration Air Handler % Rated Airflow Off Delay (seconds) (second) RHPL-HM2421 RHPL-HM3621 RHPL-HM4824 6.2 Serial Communications Control RHPL-HM6024 5.11 CONVENTIONAL 24VAC THERMOSTAT CONTROL WIRING The (-)PRL series of heat pumps allow the installer to use conventional 24VAC control... -
Page 22: Cooling Airflow Adjustments With Single Stage Condensing Units
The (-)HPL-series of air handlers are factory configured to for proper airflow. The cooling The RHPL-series of air handlers are factory configured to for proper airflow. The cooling airflow (CAF) is fixed and the DIP switch settings have no effect on airflow. The factory airflow (CAF) is fixed and the DIP switch settings have no effect on airflow. -
Page 23: Airflow Adjustment (Trim)
The (-)HPL-series of air handlers are factory programmed to provide adequate airflow for Air Handler Above 15KW and electric heat (auxiliary heat). Airflow for electric heat is fixed and cannot be field adjusted. Model 15KW: below: RHPL-HM2421JC 800 CFM 600 CFM RHPL-HM3621JC 1200 CFM 600 CFM Thermostat Electric Heat Airflow... -
Page 24: Cooling Delay Profiles
Figure X – On Demand Dehumidification DIP Switch Figure X – On Demand Dehumidification DIP Switch The (-)HPL-series air handler is shipped with “On Demand Dehumidification” (ODD) turned The (-)HPL-series air handler is shipped with “On Demand Dehumidification” (ODD) turned OFF. - Page 25 Descriptions of the air handler serial communicating control diagnostic codes are provided Descriptions of the air handler serial communicating control diagnostic codes are provided Descriptions of the air handler serial communicating control diagnostic codes are provided Descriptions of the air handler serial communicating control diagnostic codes are provided Descriptions of the air handler serial communicating control diagnostic codes are provided below.
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Page 26: Ductwork
6.0 DUCTWORK Field ductwork must comply with the National Fire Protection Association NFPA 90A, NFPA 90B and any applicable local ordinance. WARNING Do not, under any circumstances, connect return ductwork to any other heat producing device such as fireplace insert, stove, etc. Unauthorized use of such devices may result in fire, carbon monoxide poisoning, explosion, per- sonal injury or property damage. -
Page 27: Refrigerant Connections
7.0 REFRIGERANT CONNECTIONS Keep the coil connections sealed until refrigerant connections are to be made. See the Installation Instructions for the outdoor unit for details on line sizing, tubing installation, and charging information. Coil is shipped with a low (5 - 10 PSIG) pressure charge of dry nitrogen. Evacuate the system before charging with refrigerant. -
Page 28: Duct Flanges
FIGURE 22 CONDENSATE DRAIN TRAP DO NOT OPERATE UNIT WITHOUT CONDENSATE DRAIN TRAP. UNIT DO NOT OVERTIGHTEN DRAIN FITTING UNIT MUST BE SLIGHTLY INCLINED TOWARD DRAIN CONNECTION. • Auxiliary drain line should be run to a place where it will be noticeable if it becomes operational. -
Page 29: Airflow Performance Data
9.1 AIRFLOW PERFORMANCE DATA Blower External Static Pressure - In. W.C. Nominal Nominal Cabinet Size 230 Volts Cooling Airflow RHPL-HM Size Thermostat Capacity Motor HP WATTS Input 1030 10x8 WATTS 2-ton HM2421 1020 1065 WATTS 1030 1070 10x8 WATTS 3-ton HM3621 1175 1200... -
Page 30: Calculations
11.0 CALCULATIONS 11.1 CALCULATING TEMPERATURE RISE • The formula for calculating air temperature rise for electric resistance heat is: 3.16 x Watts Temperature Rise °F = Where: 3.16 = Constant, CFM = Airflow 11.2 CALCULATING BTUH HEATING CAPACITY • The formula for calculating BTUH heating capacity for electric resistance heat is: BTUH Heating = Watts x 3.412 Where: 1 kW = 1000 Watts, 3.412 = Btuh/Watt 11.3 CALCULATING AIRFLOW CFM... -
Page 31: Pre-Start Checklist
12.0 PRE-START CHECKLIST PRE-START CHECKLIST Is unit properly located, level, secure and service- able? Has auxiliary pan been provided under the unit with separate drain? (Units installed above a finished ceiling). Is condensate line properly sized, run, trapped, pitched and tested? Is ductwork correctly sized, run, taped and insulat- Have all cabinet openings and wiring been sealed with caulking? -
Page 32: Comfort Control System™ Board Replacement
IMPORTANT: Do not use caustic household drain cleaners, such as bleach, in the con- densate pan or near the indoor coil. Drain cleaners will quickly damage the indoor coil. CAUTION In compliance with recognized codes, it is recommended that an auxiliary drain pan be installed under all evaporator coils or units containing evaporator coils that are located in any area of a structure where damage to the building or building contents may occur as a result of an overflow of the coil drain pan... -
Page 33: Lubrication
13.5 LUBRICATION The blower motor sleeve bearings are pre-lubricated by the motor manufacturer and do not have oiling ports. Motor should be run for an indefinite period of time without addi- tional lubrication. 13.6 BLOWER ASSEMBLY REMOVAL AND REPLACEMENT Removing the blower assembly is not required for normal service and maintenance. Removal is necessary for replacement of components such as motor and/or blower wheel. -
Page 34: Ecm Control Module Replacement
FIGURE 24 INTERNAL MOTOR PLUG AND SOCKET • With motor held to above position and motor lead plugs oriented to the original posi- tion (the wire connectors on the motor must point straight to the front of the unit. Securely tighten the bolt on the mount band to the motor shell. •... -
Page 35: Replacement Parts
• With wrap (cutoff) screws removed, cut off end of blower wrap will spring up. Lifting wrap blower wheel is removed through the discharge opening in the blower housing. • To replace, make sure wheel is oriented properly with hub to the opposite side from the motor. - Page 36 FIGURE 27 EXTERNAL FILTER BASE: RXHF- • External Filter Rack: RXHF-B (See Figure 23) Model Cabinet Size Filter Size Part Number 20 x 20 RXHF-B21 20.40 20.77 Accommodate 25 x 20 RXHF-B24 25.00 21.04 1” filter FIGURE 28 EXTERNAL FILTER RACK: RXHF-B21, B24 1.50 •...
- Page 37 FIGURE 29 AIR HANDLER EQUIPPED WITH Serial Communication™ WIRING DIAGRAM...
- Page 40 CM 0411...